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        var str="塞肉鬼魂波i热尔数量的那份链接哦"
        var str2="sdgddcszdcas";
        var str3=str.concat(str2);
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        var str="那就废了你";
        var str2=str.replace("废了","弄洗");
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        var str="爱你";
        var str2=str.repeat(3000);
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        var str="dfag";
        var str2=str.toUpperCase();
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        var str="DRHSDTNH";
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